from flask_pagedown.fields import PageDownField
from flask_mail import Message,Mail
from flask_wtf import FlaskForm
from wtforms import StringField, PasswordField, BooleanField, SubmitField, ValidationError, SelectField, TextAreaField
from wtforms.validators import Required, Length, Email, Regexp, EqualTo
from app.models import User, Role
from flask_pagedown.fields import PageDownField
class NameForm(FlaskForm):
    name = StringField('what is your name?', validators=[Required()])
    submit = SubmitField('Submit')
class LoginForm(FlaskForm):
    email = StringField('Email', validators=[Required(), Length(1, 64),Email()])
    password = PasswordField('Password', validators=[Required()])
    remember_me = BooleanField('Keep me logged in')
    submit = SubmitField('Log In')
class RegistrationForm(FlaskForm):
    email = StringField('Email', validators=[Required(), Length(1, 64),
                                             Email()])
    username = StringField('username', validators=[
        Required(), Length(1, 64), Regexp('^[A-Za-z][A-Za-z0-9_.]*$', 0,
                                          'Usernames must have only letters, '
                                          'numbers, dots or underscores')])
    password = PasswordField('Password',validators=[
        Required(), EqualTo('password2', message='Passwords must match.')])
    password2 = PasswordField('Confirm password', validators=[Required()])
    submit = SubmitField('Register')
    def validate_email(self, field):
        if User.query.filter_by(email=field.data).first():
            raise ValidationError('Email already registered.')

    def validate_username(self, field):
        if User.query.filter_by(username=field.data).first():
            raise ValidationError('Username already in use.')
class EditProfileForm(FlaskForm):
    name = StringField('Real name', validators=[Length(0, 64)])
    location = StringField('Location', validators=[Length(0, 64)])
    about_me = PageDownField('About me')
    submit = SubmitField('Submit')
class EditProfileAdminForm(FlaskForm):
    email = StringField('Email', validators=[Required(), Length(1, 64),
                                             Email()])
    username = StringField('Username', validators=[Required(),
                                                   Length(1, 64), Regexp('^[A-Za-z][A-Za-z0-9_.]*$', 0,
                                                                         'Usernames must have only letters, '
                                                                         'numbers, dots or underscores')])
    confirmed = BooleanField('Confirmed')
    role = SelectField('Role', coerce=int)
    name = StringField('Real name', validators=[Length(0, 64)])
    location = StringField('Location', validators=[Length(0, 64)])
    about_me = StringField('About me')
    submit = SubmitField('Submit')
    def __init__(self, user, *args, **kwargs):
        super(EditProfileAdminForm, self).__init__(*args, **kwargs)
        self.role.choices = [(role.id, role.name) for role in Role.query.order_by(Role.name).all()]
        self.user = user
    def validate_email(self, field):
        if field.data != self.user.email and \
           User.query.filter_by(email=field.data).first():
            raise ValidationError('Email already registered.')
    def validate_username(self, field):
        if field.data != self.user.username and \
           User.query.filter_by(username=field.data).first():
            raise ValidationError('Username already in use.')

class PostForm(FlaskForm):
    body = PageDownField("", validators=[Required()])
    submit = SubmitField('发表')
